Are 650W enough for i7 4770k & r9 280x

[sGollSv]

Hey guys, sorry if there's already a post like this but I could'nt find one.

I bought an EVGA SuperNOVA NEX650G 650W ATX 2.3 and now I'm not sure whether it's powerful enough for my setup.

Im using:
-i7 4770k
-Asus r9 280x top
-ssd&hdd

are the 650 watts enough ? Can I overclock my CPU with it and to which frequency?

 

[clutchc]

Yes. Plenty.

 

[Pondering]

650 W for stock speeds 750W for overclocking since I don't want to do calculations for amperage.

The i7 4770k has a max TDP of 84 Watts and the r9 280x has a max TDP of 250 Watts. 334 Watts is 51% of 650 Watts of a Quality PSU's maximum 'rated' capacity so there is a remaining headroom of 186 Watts (520 - 334).

The overhead room figure comes from 80% of the quality PSU's 'rated' capacity since the PSU should never be pushed past 80% at maximum load for long periods of time and/or past 60% at normal load for wear and tear as well as efficiency. However these measurements only apply if you are a getting a -Quality- power supply.

Formula for PSU Wattage recommended: (Max TDP of Processor + Max TDP of Graphics Card) * 2
Formula for PSU Wattage recommended for overclocking: (Max TDP of Processor + Max TDP of Graphics Card) * 2.5
Formula for PSU Wattage minimum: (Max TDP of Processor + Max TDP of Graphics Card) * 1.67
Formula for PSU Wattage headroom: (PSU 'Rated' Capacity * .8) -(Max TDP of Processor + Max TDP of Graphics Card)

 

[sGollSv]

So I cannot overclock my CPU with it ? Thanks for the answer, you explained really good.